Cast steering axle for forklift

Abstract

The invention discloses a cast steering axle for a forklift. The cast steering axle comprises a steering axle body, a steering oil cylinder, two steering knuckles, two connecting rods, two main pins and two connecting rod pins, the two main pins are arranged at the two ends of the steering axle body respectively; wherein two tapered roller bearings are arranged on the main pins, the steering knuckles are installed on the two tapered roller bearings, a dustproof ring is arranged at the upper ends of the tapered roller bearings, an oil seal is arranged at the lower ends of the tapered roller bearings, a pull arm hole is formed in the steering knuckle, and the connecting rod pin is installed in the pull arm hole. The steering oil cylinder is arranged on the steering axle body and comprises acylinder barrel assembly, a piston rod, a piston, a flange support and two guide sleeves, the flange support is welded to the cylinder barrel assembly, the piston is arranged on the piston rod in a sleeving mode, and the piston rod is installed in the cylinder barrel assembly through the two guide sleeves. Two ends of the connecting rod are respectively hinged to the connecting rod pin and the piston rod. The reliability and durability of the steering axle are greatly improved, and safety risks are prevented.

Description

technical field [0001] The invention relates to the technical field of industrial vehicles, in particular to a cast steering axle for forklifts. Background technique [0002] Forklifts are widely used in factories, warehouses, stations, ports, airports and other places. They are material handling vehicles for mechanized loading and unloading, stacking and short-distance transportation. The traditional structure of the forklift steering bridge is a box-type structure welded by steel plates, which has disadvantages such as cumbersome processing technology, welding defects and poor appearance. The steering mechanism of the steering axle of the traditional structure is connected by two needle bearings and a thrust ball bearing. The kingpin cooperates with the roller of the needle bearing. Because the kingpin and the steering knuckle are fixed together, the kingpin Following the rotation, when the forklift is in use due to frequent steering operations due to full load, overload ...

AI Technical Summary

Problems solved by technology

The traditional structure of the forklift steering bridge is a box-type structure welded by steel plates, which has the disadvantages of cumbersome processing technology, welding defects and poor appearance.

The steering mechanism of the steering axle of the traditional structure is connected by two needle bearings and a thrust ball bearing. The kingpin cooperates with the roller of the needle bearing. Because the kingpin and the steering knuckle are fixed together, the kingpin Following the rotation, when the forklift is in use due to frequent steering operations due to full load, overload or bumpy roads, the steering knuckle produces a large radial force and bearing force, and the kingpin and needle bearing will produce large friction, causing the rolling The needle bearing cage has early wear or burnout, kingpin wear and other adverse phenomena; when the machining error of the inner gear distance of the steering axle is too large or too small or the bridge plate undergoes elastic deformation, the axial force of the thrust ball bearing will increase or The radial force increases, so that the thrust ball bearing is subjected to excessive axial force resulting in rupture, and the large radial force received leads to early wear and other adverse phenomena

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